source: cprs/trunk/BDK32/Samples/SharedRPCBroker/BrokerEx/frmVistAAbout.pas@ 1676

Last change on this file since 1676 was 829, checked in by Kevin Toppenberg, 14 years ago

Upgrade to version 27

File size: 9.0 KB
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[829]1unit frmVistAAbout;
2
3interface
4
5uses Windows, SysUtils, Classes, Graphics, Forms, Controls, StdCtrls,
6 Buttons, ExtCtrls, jpeg, jconsts, Dialogs;
7
8TYPE
9 TInteger8 = Int64;
10
11type
12 TfrmVistAAbout = class(TForm)
13 Panel1: TPanel;
14 VistaLogo: TImage;
15 lblProductName: TLabel;
16 lblVersion: TLabel;
17 lblGovStatement: TLabel;
18 OKButton: TButton;
19 lblCRC: TLabel;
20 Memo1: TMemo;
21 lblDate: TLabel;
22 ProgramIcon: TImage;
23 procedure FormCreate(Sender: TObject);
24 private
25 { Private declarations }
26 public
27 { Public declarations }
28 procedure getfileinfo(var Version: String; var ProductName: String); virtual;
29 end;
30
31procedure ShowAboutBox;
32
33implementation
34
35{$R *.DFM}
36
37 CONST
38 table: ARRAY[0..255] OF DWORD =
39 ($00000000, $77073096, $EE0E612C, $990951BA,
40 $076DC419, $706AF48F, $E963A535, $9E6495A3,
41 $0EDB8832, $79DCB8A4, $E0D5E91E, $97D2D988,
42 $09B64C2B, $7EB17CBD, $E7B82D07, $90BF1D91,
43 $1DB71064, $6AB020F2, $F3B97148, $84BE41DE,
44 $1ADAD47D, $6DDDE4EB, $F4D4B551, $83D385C7,
45 $136C9856, $646BA8C0, $FD62F97A, $8A65C9EC,
46 $14015C4F, $63066CD9, $FA0F3D63, $8D080DF5,
47 $3B6E20C8, $4C69105E, $D56041E4, $A2677172,
48 $3C03E4D1, $4B04D447, $D20D85FD, $A50AB56B,
49 $35B5A8FA, $42B2986C, $DBBBC9D6, $ACBCF940,
50 $32D86CE3, $45DF5C75, $DCD60DCF, $ABD13D59,
51 $26D930AC, $51DE003A, $C8D75180, $BFD06116,
52 $21B4F4B5, $56B3C423, $CFBA9599, $B8BDA50F,
53 $2802B89E, $5F058808, $C60CD9B2, $B10BE924,
54 $2F6F7C87, $58684C11, $C1611DAB, $B6662D3D,
55
56 $76DC4190, $01DB7106, $98D220BC, $EFD5102A,
57 $71B18589, $06B6B51F, $9FBFE4A5, $E8B8D433,
58 $7807C9A2, $0F00F934, $9609A88E, $E10E9818,
59 $7F6A0DBB, $086D3D2D, $91646C97, $E6635C01,
60 $6B6B51F4, $1C6C6162, $856530D8, $F262004E,
61 $6C0695ED, $1B01A57B, $8208F4C1, $F50FC457,
62 $65B0D9C6, $12B7E950, $8BBEB8EA, $FCB9887C,
63 $62DD1DDF, $15DA2D49, $8CD37CF3, $FBD44C65,
64 $4DB26158, $3AB551CE, $A3BC0074, $D4BB30E2,
65 $4ADFA541, $3DD895D7, $A4D1C46D, $D3D6F4FB,
66 $4369E96A, $346ED9FC, $AD678846, $DA60B8D0,
67 $44042D73, $33031DE5, $AA0A4C5F, $DD0D7CC9,
68 $5005713C, $270241AA, $BE0B1010, $C90C2086,
69 $5768B525, $206F85B3, $B966D409, $CE61E49F,
70 $5EDEF90E, $29D9C998, $B0D09822, $C7D7A8B4,
71 $59B33D17, $2EB40D81, $B7BD5C3B, $C0BA6CAD,
72
73 $EDB88320, $9ABFB3B6, $03B6E20C, $74B1D29A,
74 $EAD54739, $9DD277AF, $04DB2615, $73DC1683,
75 $E3630B12, $94643B84, $0D6D6A3E, $7A6A5AA8,
76 $E40ECF0B, $9309FF9D, $0A00AE27, $7D079EB1,
77 $F00F9344, $8708A3D2, $1E01F268, $6906C2FE,
78 $F762575D, $806567CB, $196C3671, $6E6B06E7,
79 $FED41B76, $89D32BE0, $10DA7A5A, $67DD4ACC,
80 $F9B9DF6F, $8EBEEFF9, $17B7BE43, $60B08ED5,
81 $D6D6A3E8, $A1D1937E, $38D8C2C4, $4FDFF252,
82 $D1BB67F1, $A6BC5767, $3FB506DD, $48B2364B,
83 $D80D2BDA, $AF0A1B4C, $36034AF6, $41047A60,
84 $DF60EFC3, $A867DF55, $316E8EEF, $4669BE79,
85 $CB61B38C, $BC66831A, $256FD2A0, $5268E236,
86 $CC0C7795, $BB0B4703, $220216B9, $5505262F,
87 $C5BA3BBE, $B2BD0B28, $2BB45A92, $5CB36A04,
88 $C2D7FFA7, $B5D0CF31, $2CD99E8B, $5BDEAE1D,
89
90 $9B64C2B0, $EC63F226, $756AA39C, $026D930A,
91 $9C0906A9, $EB0E363F, $72076785, $05005713,
92 $95BF4A82, $E2B87A14, $7BB12BAE, $0CB61B38,
93 $92D28E9B, $E5D5BE0D, $7CDCEFB7, $0BDBDF21,
94 $86D3D2D4, $F1D4E242, $68DDB3F8, $1FDA836E,
95 $81BE16CD, $F6B9265B, $6FB077E1, $18B74777,
96 $88085AE6, $FF0F6A70, $66063BCA, $11010B5C,
97 $8F659EFF, $F862AE69, $616BFFD3, $166CCF45,
98 $A00AE278, $D70DD2EE, $4E048354, $3903B3C2,
99 $A7672661, $D06016F7, $4969474D, $3E6E77DB,
100 $AED16A4A, $D9D65ADC, $40DF0B66, $37D83BF0,
101 $A9BCAE53, $DEBB9EC5, $47B2CF7F, $30B5FFE9,
102 $BDBDF21C, $CABAC28A, $53B39330, $24B4A3A6,
103 $BAD03605, $CDD70693, $54DE5729, $23D967BF,
104 $B3667A2E, $C4614AB8, $5D681B02, $2A6F2B94,
105 $B40BBE37, $C30C8EA1, $5A05DF1B, $2D02EF8D);
106
107 // Use CalcCRC32 as a procedure so CRCValue can be passed in but
108 // also returned. This allows multiple calls to CalcCRC32 for
109 // the "same" CRC-32 calculation.
110 PROCEDURE CalcCRC32 (p: pointer; ByteCount: DWORD; VAR CRCValue: DWORD);
111 // The following is a little cryptic (but executes very quickly).
112 // The algorithm is as follows:
113 // 1. exclusive-or the input byte with the low-order byte of
114 // the CRC register to get an INDEX
115 // 2. shift the CRC register eight bits to the right
116 // 3. exclusive-or the CRC register with the contents of
117 // Table[INDEX]
118 // 4. repeat steps 1 through 3 for all bytes
119
120 VAR
121 i: DWORD;
122 q: ^BYTE;
123 BEGIN
124 q := p;
125 FOR i := 0 TO ByteCount-1 DO BEGIN
126 CRCvalue := (CRCvalue SHR 8) XOR
127 Table[ q^ XOR (CRCvalue AND $000000FF) ];
128 INC(q)
129 END
130 END {CalcCRC32};
131
132
133 // The CRC-32 value calculated here matches the one from the PKZIP program.
134 // Use MemoryStream to read file in binary mode.
135 PROCEDURE CalcFileCRC32 (FromName: STRING; VAR CRCvalue: DWORD;
136 VAR TotalBytes: TInteger8;
137 VAR error: WORD);
138 VAR
139 Stream: TMemoryStream;
140 BEGIN
141 error := 0;
142 CRCValue := $FFFFFFFF;
143 Stream := TMemoryStream.Create;
144 TRY
145 TRY
146 Stream.LoadFromFile(FromName);
147 IF Stream.Size > 0
148 THEN CalcCRC32 (Stream.Memory, Stream.Size, CRCvalue)
149 EXCEPT
150 ON E: EReadError DO
151 error := 1
152 END;
153
154 CRCvalue := NOT CRCvalue;
155 TotalBytes := Stream.Size
156 FINALLY
157 Stream.Free
158 END;
159 END {CalcFileCRC32};
160
161procedure TfrmVistAAbout.FormCreate(Sender: TObject);
162var
163 CRC32: DWord;
164 TotalBytes: Int64;
165 Error: Word;
166 Text: String;
167 Version: String;
168 ProductName: String;
169begin
170 CalcFileCRC32(Application.ExeName, CRC32, TotalBytes, Error);
171 lblCRC.Caption := 'CRC: ' + IntToHex(CRC32,8);
172 Text := Application.ExeName;
173 while pos('\',Text) > 0 do
174 begin
175 Text := copy(Text,pos('\',Text)+1,Length(Text));
176 end; // while
177 Text := copy(Text,1,Length(Text)-4);
178 Caption := 'About ' + Text;
179 getfileinfo(Version, ProductName);
180 lblProductName.Caption := ProductName;
181 lblVersion.Caption := 'Version: ' + Version;
182 lblProductName.Width := Panel1.Width-10;
183 lblGovStatement.Width := Panel1.Width-10;
184 if ProgramIcon.Picture.Graphic = nil then
185 begin
186 VistALogo.Left := (Panel1.Width - VistALogo.Width) div 2;
187 end;
188end;
189
190procedure TfrmVistAAbout.GetFileInfo(var Version: String; var ProductName: String);
191var
192 VerInfoSize: DWORD; // holds the size of the version info resource
193 GetInfoSizeJunk: DWORD; // a junk variable, its value is ignored
194 VersionInfo: Pointer; // points to the version info resource
195 Translation: Pointer; // holds version info translation table
196 InfoPointer: Pointer; // a pointer to version information
197
198 VersionInfoSize: UINT; // holds the size of version information
199 VersionValue: string; // holds the version info request string
200 SearchRec: TSearchRec;
201 DateTimeVal: TDateTime;
202 WriteTime: Integer;
203begin
204 {retrieve the size of the version information resource, if one exists}
205 VerInfoSize := GetFileVersionInfoSize(PChar(Application.ExeName),
206 GetInfoSizeJunk);
207
208 {if there was a version information resource available...}
209
210 if VerInfoSize>0 then
211 begin
212 {retrieve enough memory to hold the version resource}
213 GetMem(VersionInfo, VerInfoSize);
214
215 {retrieve the version resource for the selected file}
216 GetFileVersionInfo(PChar(Application.ExeName), 0,
217 VerInfoSize, VersionInfo);
218
219 {retrieve a pointer to the translation table}
220 VerQueryValue(VersionInfo, '\\VarFileInfo\\Translation',
221 Translation, VersionInfoSize);
222
223 {initialize the version value request string}
224 VersionValue :='\\StringFileInfo\\'+
225 IntToHex(LoWord(LongInt(Translation^)),4)+
226 IntToHex(HiWord(LongInt(Translation^)),4)+
227 '\\';
228
229 {retrieve and display the file version}
230 VerQueryValue(VersionInfo, PChar(VersionValue+'FileVersion'), InfoPointer,
231 VersionInfoSize);
232 Version := string(PChar(InfoPointer));
233
234 {retrieve and display the product name}
235 VerQueryValue(VersionInfo, PChar(VersionValue+'ProductName'), InfoPointer,
236 VersionInfoSize);
237 ProductName := string(PChar(InfoPointer));
238
239 {free the version resource memory}
240 FreeMem(VersionInfo, VerInfoSize);
241 end
242 else
243 begin
244 Version := 'Not in File';
245 ProductName := 'Not Identified In File';
246 end;
247 if findfirst(Application.ExeName, faAnyFile, SearchRec) = 0 then
248 begin
249 WriteTime := SearchRec.Time;
250 DateTimeVal := FileDateToDateTime(WriteTime);
251 lblDate.Caption := FormatDateTime('mmmm dd, yyyy hh:nn',DateTimeVal);
252 end;
253end;
254
255procedure ShowAboutBox;
256begin
257 with TfrmVistAAbout.Create(Application) do
258 try
259 ShowModal;
260 finally
261 free;
262 end;
263end;
264
265end.
266
267
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